1.You ______ to the meeting this afternoon if you have something important to do.
A.needn"t to come B.don"t need come
C.don"t need coming D.needn"t come
2.He _________you more help,even though he was vevy busy.
A.might have given B.might give
C.may have given D.may give
请给出正确答案,分析为什么选这个,以及其他答案错误的原因
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1.当must+have done表示对过去的情况进行推测(一般句中有明确的过去时间状语)(此题即为此情况),问句要根据陈述部分谓语的情况用“didn't+主语”或“wasn't\/weren't+主语”;此题为must have been即陈述部分谓语为been,则此反义疑问句用wasn't he。2.如果强调动作的完成(一般没有明确的...
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